Chloromethane
Middletown Water Department
Chloromethane is an industrial solvent, aerosol propellant and a refrigerant. It also forms as a byproduct of water disinfection. The EPA classifies chloromethane as possibly carcinogenic to humans.
18
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 5 | 0 | ND |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 2.69 ppb
The EWG Health Guideline of 2.69 ppb for chloromethane was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-06-09 | VOC1 200397423 | ND |
| 2014-06-09 | VOC1 200397422 | ND |
| 2014-08-11 | 200401595 | ND |
| 2014-08-11 | 200401594 | ND |
| 2014-11-19 | 200408290 | ND |
| 2015-02-26 | 200412752 | ND |
| 2015-02-26 | 200412753 | ND |
| 2015-05-20 | 200417220 | ND |
| 2015-05-28 | VOC1 200417513 | ND |
| 2015-06-01 | VOC1 200417623 | ND |
| 2016-06-22 | VOC1 200442999 | ND |
| 2016-06-29 | VOC1 200443424 | ND |
| 2017-06-29 | VOC1 200470757 | ND |
| 2017-09-29 | VOC1 200478287 | ND |
| 2018-03-28 | VOC1 200490770 | ND |
| 2018-04-16 | VOC1 200492154 | ND |
| 2019-05-13 | VOC1 200531893 | ND |
| 2019-05-21 | VOC1 200533083 | ND |